Jib-boom foe vessels



TINTTED STATES PATENT TTTSCE.

CHARLES L. LINNEIIL, OF TRURO, MASSACHUSETTS.

JIB-BOOM FOR VESSELS.

Specification of Letters Patent No. 23,926, dated May 10, 1859.

To all whom it may concern:

Be it known that I, CHARLES L. LINNELL, of rTruro, in the county of Barnstable and State of Massachusetts, have invented a new and useful Improvement in the Application of an After Jib-Boom to the Bowsprit of a Vessel; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawing, which denotes a side elevation of the fore part of a vessel having my invention applied to its bowsprit and after jib-boom.

In such drawing, A, denotes the hull; B, the foremast; C, the bowsprit; I), the jib, and, E, the. after jib boom (or boom jib as Often called) Of a navigable vessel or schooner. v

Owing to the usual rake of the foremast, it is generally ditlicult, when an after jib boom is used and the sail is being lowered, to get the point or head Of the sail close down upon the boom, for as the sail is guided by rings Z), b, b, &c., running on the free stay, a, the sail while being lowered, has its head constantly approaching the eX- treme or forward end of the bowsprit so as to produce more or less draft on the heel of the jib. In order to enable the heel of the jib to come forward toward the front end of the bowsprit, I apply to the bowsprit a slide rail or rod, o', on which I place a slider d, capable of sliding longitudinally on the said rail. To vthis slider I oint the forward end of the boom E, by a universal or other proper joint Or its equivalent such as will allow of the traveling movements of the boom. IVhile the sail is in the act Of falling the boom will be left free to move forward toward the end Or nose'of the bowsprit so as to enable the sail to entirely fall and be furled to advantage.

-In the drawing, e, is the halyard and, f, the downhaul and, g, the sheet of the jib, while, la, exhibits a topping lift applied to the after end of the booin and for the purpose of lifting the boom up to the stay so as to clear the sail from the bowsprit, and keep it out of the way of persons who may have occasion to step on the bowsprit.

' I claim- The application of the after jib-boom to the bowsprit by means not only of the slide rod applied to the bowsprit but the slider connected with the boom substantially as described.

-In testimony whereof, I have hereunto set my signature.

CHARLES L. LINNELIJ.

Nitnessesz SOLOMON Davis, AMASA PAINE. 

